Home / 83,976.45-115,911.32-55,317.03

Finding the Fourth Proportional to 83,976.45, 115,911.32 and 55,317.03

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Solution

The fourth proportional to 83,976.45, 115,911.32 and 55,317.03 is: 76,353.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,976.45 : 115,911.32 = 55,317.03 : x
  2. Step 2: Convert to fraction form
    83,976.45/115,911.32 = 55,317.03/x
  3. Step 3: Cross multiply
    83,976.45x = 115,911.32 × 55,317.03
  4. Step 4: Simplify right side
    83,976.45x = 6,411,869,689.19
  5. Step 5: Solve for x
    x = 6,411,869,689.19/83,976.45
  6. Step 6: Final answer
    x = 76,353.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.